This paper presents a numerical investigation on the influence of different types of damage to the load capacity of in-service timber utility poles. Current design codes do not highlight a pole’s strength performance due to different types of damage. However, damages typically found in ageing timber poles, such as damage due to fungus or termite attack, have very different characteristics and result in various effects on the strength properties of timber poles. Hence, the presented study investigates the influence of typical common types of damage to the strength properties and load capacities of timber utility poles. The study considers the damage type, location and severity. Wind load is considered as critical load due to the practical issue. The research shows that external damages at ground level significantly affect the load capacity of a timber pole.While internal damage, such as termite nests, has less influence on the load capacity regardless of the damage location and severity.

This paper presents a numerical investigation on the influence of different types of damage to the load capacity of in-service timber utility poles. Current design codes do not highlight a pole’s strength performance due to different types of damage. However, damages typically found in ageing timber poles, such as damage due to fungus or termite attack, have very different characteristics and result in various effects on the strength properties of timber poles. Hence, the presented study investigates the influence of typical common types of damage to the strength properties and load capacities of timber utility poles. The study considers the damage type, location and severity. Wind load is considered as critical load due to the practical issue. The research shows that external damages at ground level significantly affect the load capacity of a timber pole.While internal damage, such as termite nests, has less influence on the load capacity regardless of the damage location and severity.

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